Material AISI440/440C,AISI420/420C,AISI316/316L,AISI304 SUS440/440C,SUS420/420C,SUS316/316L,AISI304,SUS304 Features: 1.Size: 0.5mm-250mm( according to clients' requirement ) 2.Hardness: G5-G100 3.Certificate:ISO-9001, ISO-14001, TS-16949 4.Appliedin all kinds of exactitude machines, bearings, ball screws, linear motion guides, automobile parts, chemical and food processing,Grinding